Let me clarify something.
The Bisimoto header and the AN-R may look the same. but the Bisimoto is the only one that USES the Burns Collector. At this time, the Bisimoto has always been using the Burns collector in all its designs.

The Bisimoto header is available in B, D, and H series engines. and options are Street(with 2.5" exit pipe), Race(with a megaphone style exit pipe)and in Jet Hot Coated or Uncoated versions

any questions, feel free to contact us at [email protected]
thanks
Wil